Yeah it had occurred to me that what I'm doing was just a GSet writ large. In my mind a CRDT was always a single record, not a collection of them - still not convinced that doesn't change it.

But if CRDTs really are a kind of a meta-language for resolving conflicts in a sane way - whether the CRDT is a single record or a whole data store - that's a nice thought. The CouchDB CRDT could be defined.